<!--
@BLINK-ALLOW:marker*
-->
<!DOCTYPE html>
<html>
<style>
  ::highlight(example-highlight) {
    background-color: yellow;
  }
</style>
<body>
<span>This is some highlighted text.</span>
<script>
  let span = document.querySelector("span");
  let r = new Range();
  r.setStart(span.firstChild, 0);
  r.setEnd(span.firstChild, span.firstChild.textContent.length);
  CSS.highlights.set("example-highlight", new Highlight(r));
</script>
</body>
</html>